Java Pattern toString() Method

The toString() Method of Pattern class returns the String representation of compiled pattern. This method of Pattern class overrides the "toString" in class Object.

Syntax:

Parameter

Returns

This method returns the string representation of this pattern.

Example 1

import java.util.regex.Pattern;
public class PatternToStringExample1 {
public static void main(String[] args) {
		    Pattern p = Pattern.compile("[a-zA-Z]+\\.? Pattern to be matched");
		    String str1 = p.pattern();
		    String str2 = p.toString();
		    System.out.println(str1);
		    System.out.println(str2);
		  }
		}

Test it Now

Output:

[a-zA-Z]+\.? Pattern to be matched
[a-zA-Z]+\.? Pattern to be matched

Example 2

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternToStringExample2 {
		
		   public static void main(String[] args) {
		      //  pattern creation
			   String regex="(.*)(\\d+)?# 2 groups";
	String input="This is a sample Text, 1234, with numbers in between";
		      Pattern p = Pattern.compile(regex,Pattern.COMMENTS);
		      Matcher m = p.matcher(input); 
		      System.out.println(p.toString());
		      System.out.println(m.toString());
		   }
		}

Test it Now

Output:

(.*)(\d+)?# 2 groups
java.util.regex.Matcher[pattern=(.*)(\d+)?# 2 groups region=0,52 lastmatch=]

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Java Pattern Class